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Hi and welcome to unit 8.

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The first thing that I want to do is take a moment to congratulate you on making it through the each

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team out and see assess basics content.

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So the first few unix we talked about Tim Allen and we talked about C Ss and then finally the bootstrap

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unit that we just completed making it through all of that.

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Mark's a pretty significant turning point in this course where we're now moving to Javascript.

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So starting in this unit and continuing for the rest of the course we're going to be using javascript

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and the general approach that we're going to take is we're going to start by stripping away edged him

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out and see assess and actually putting that on the backburner for just a few units.

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We'll be picking it up very shortly.

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But to start we're only focusing on Javascript.

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So for the next few unix pure javascript we won't be making the most beautiful the most exciting real

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web applications but we will be focusing on the most important components.

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The most important basic pieces of javascript that will help us make the really bad sites down the line

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I'll take you back to one of the first lectures we did the introduction to front end lecture where we

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talked about h tim elsea SAS and Javascript and we didn't really write any code.

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I showed you a little bit but it was more about talking or introducing what they each do what their

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respective roles are.

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One of the analogies that I mentioned is that it's Tim Ellis often considered the noun or the nouns

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on a page and C Ss is the adjectives that are going in and styling or describing those nouns and then

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the action or the verbs are javascript.

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Javascript is really exciting and it's by far the single most important technology that we're going

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to learn in this course but also the most important technology out there in all of tech right now by

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learning javascript.

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We open up a whole world new possibilities for the things that we can make in make games we can make

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full applications Yelp clones Twitter clients Facebook clones anything that you want live chat a drawing

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application literally anything that you've seen in the browser anything exciting.

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It's all done with javascript.

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Almost all of it's done the javascript plus some aged him elenchi assess and then once we finish talking

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about javascript on the front end we're also going to be talking about no J.S. which is how we write

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javascript on the back end.

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And we haven't talked much about what that is and how it works.

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But what I want you to know is that it's the same Javascript the same language.

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So what you're learning in the next few years we're going to talk about things like functions and variables

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and primitive data types that carries over to No.

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Yes as well.

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So really important really foundational.

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Next few lectures.

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So this unit in particular focuses on some of the most important the most fundamental concepts in all

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of javascript and there are five main key objectives that we're going to hit.

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The first one is that I want you to be able to run javascript in the chrome developer console.

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So we'll be able to open up the browser and just write some javascript and immediately evaluate it the

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next objective is to talk about the five primitive data types in javascript and not just talk about

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them not just use them but I want you to be able to explain and define the five primitive types and

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compare and contrast them all.

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So that's a really important piece that also ties into the next objective which is for you to write

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code that defines and references javascript variables.

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So variables are really important parts of javascript.

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It's how we store little pieces of information and how we remember things and reference them later.

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So really important to pretty much every application out there.

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Variables are one of the most basic most fundamental concepts that you have to master.

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And then once we finish covering variables and primitive data types the last objective is for you to

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be able to use three built in javascript methods and those methods are constantly log alert and prompt

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.

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So these are some built in bits of code that will help you make applications not quite applications

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but they'll help you make things so help you make little games and toys faster using some built in code

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that the browser has already written for you.

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So they'll make a little more sense once you get started.

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And the last thing that I'll add is that this unit is very exercise and activity heavy.

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So we're not making any killer projects nothing that's going to really knock your socks off at all but

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lots of important and fun and hopefully challenging challenges.

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The point here is to really hit hard.

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How javascript works really focus on the basics so that when we get to those really fun things when

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we're hooking up a database using no J.S. when we're creating a web server and writing templates and

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recreating games from or writing a clone of a Web site like Yelp when we do that you'll have a solid

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foundation and you'll be able to understand what we're doing.

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So it's not just about copying the code that you see me do.

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It's not just about reciting things and regurgitating things.

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But I really want you to understand and comprehend how things work.

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So let's get started.

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The first thing that will do is take a look at the chrome javascript Council